Friction draft-rigging.



J. F. O'CONNOR. FBIOTION DRAFT BIGGING. Drum-non nun 11.27. 190.1.

1,026,113. Patented May 14, 1912 2 SHEETS-SHEET 2.

INVENTOR his A TTORNE 1 JE/m F O 'Cormor ai-lway. cars. A

l WWPrrw m n or i erases Jenn" r. dominion,

l .rnroridn inniirr-nreemo.

Specification of Letters Patent. 0 Application filed llpril 27, 1907.

or CHIC-AGO, "rnLINois, Assrenoa; in mnsnn nssrdimnnrs, To ,wILLrnM H1.1MINER','OF onicneoyrrmnorsu Y serial No. 370,551.

To ollwiwn'i it may concern: 7

Be -1t'lniown'thahl, Jonx F. OCoxxon, a

citizen ofthe United States, residing in Chicago. 1n the county of Cook and State of llllilOlS, hare lllll'l'ttltl a new and useful linproreinent in Friction Draft- Rigging cf which the following" is a. specification.

'My invention relates to draft r'ig ing for I 'i no object of iny inrentionis to gproride a tandem spring draft ri of a simple,

etlicientand durable coi'zstruct'ion coin )osed of rm parts, in which the tandem arranged 3 springs will have auxiliary friction or spring dampening devices to increase the cushion ing power of the draft rigging late or govern the release.

My invention consists in the means I eniploy and herein shown, and described, for

and to. reguracticall t HCCOll'lJllSllillP' this ob'ect or re;

suit.

In the accompanying drawing forming a.

the springs. Fig. 3 is a cross section on line 3 3 of Fig. 2. Fig. 4 illustrates a modification. Fig. illustrates my spring dampening or friction device as applied to other use.

in the drawing, A. represents the drawbar, A the draw-bar strap or yoke, '13 the side plates or stop castings which are to he secured to the center sills, draft tiinbers or other parts of the car framework, and fur nishcd with stops 5 b b Z2 for the followers C to abutragainst.

D D are tandem arranged. springs between the followers.

F F are friction shells, one inclosing each of the springs D and a ainstthe bottom or end f of which one end of each of the springs abuts.

having exterior friction faces h in-sliding friction contact with the interior friction face f of the friction shell or cup F. [The Fig. 2 1s a detail partial longitudinal section through one of which engage or cooperate withinclined or wedg'nig faces 9 on the lnner-friction shell G to force the exterior friction faces 71. 01

of the segmental blocks Hagainst the in t'erior friction faces f of theouter cup or' shell ll.

The friction" shell F, inner shell G and Patented May 14,1912.

segmental friction blocks. H surround the spring Dancl are interposed between the fol- As the spring D is compressed lowers 0C1 by the followers actingdirectly against the friction shell F and segmental friction blocks H, the shells F, G and blocks H telescope together and exert a frictional resistance auxiliary to the tensional. resist ance of the spring I) and in. releasing as the sprin expands, these friction devices F, H regdate or govern the release. r

The shells F G are inovably connected together by a. longitt'idinal rod or rivet. K, the

heads 1 a of which lit in central recesses f g in the heads or ends f, g of the shells F, G,

these recesses or depressions being deep enough to permit the necessary telescopic.

movement of the shells F G.

As illustrated in.Fig..4, where only one pair of followers is employed, and in which the rear follower is. made integral with afriction shell M, friction blocks M 'h'aving wedging faces in which cooperate with wedges N are substituted for onset the tandem arranged springs D. andone set of friction shells F, G blocks H.

lnthe modification illustrated in Fig. 5, the spring, outer friction shell, inner cup or shell and segi'nental friction blocks are illustratedas being interposed between two members of a car truck frtune. The friction shell F is preferablycircular or cylindric in shape.

polygonal sides or outer faces." The seginental fricti'on blocks H preferably have curred outer friction faces and flatinner faces.

In Fig. l of the drawing, I have illustrated the friction or spring dampening shells F D and segmental friction blocks H as surrounding or applied to botli the front and rear tandem springs D, but it will be understood bythose skilled in the artfthat and segmental friction The she-ll G lea ably has a circular of cylindric I interior with ice , intermediate followers, two tandem arranged taining' telescoping shells, a spring within sets of cooperating frict-ion and springcon-v taining telescoping shells, a springwithin' each set of shells, each set "comprising an inner shell against which one end of the contained sp'rlng abuts and an outer shell against which the other end of the,con tained spring abuts, and segmental friction blocks between the inner and outer shells. of each set, said-tandem arranged springs and said tandem arranged'sets of friction shells coacting together-t0 cushion both-pulling and huffing movements of said draw-bar, sub-f stantially as specified. .1 .2; In a tandem spring draftrigging, the combination with a draw-bar, front, rear and" 'rniediate stops and front, rear 'and inter te'followers,t'wo tandem arranged sets-T ooperating friction and spring con-' each set of shells, each set comprising an' spring draft rigging, b

inner" shell against which one end of the :contained, springabuts and an outer shell against which the other end of the contained spring: abuts, and segmental friction blocks twenfgthe inner and outer shells of each ,l t having interengaging wedging faces;"--s'aid tandem arranged springs and said tandem arrangedsets of friction shells coacting together..to cushion both pulling and butfing"movements of "said draw-bar, substantially as specified.

3. In a draft rigging, the combination -with a draw-bar, stops and followers, of a spring between the followers, a pair of telescoping shells both surrounding said'spring, and each having a closed head at one end against which one end of the' spring abuts, segmental friction blocks interposed between the telescoping shells and provided with wedging faces at, each'end thereof, and one of said shells having cooperating wedge faces, one pair at each end thereof, substantially as specified.-

JOHN F. OCONNOR. Witnesses:

EDMUND AnoooK,

- PEARL ABRAMS.

iction blocks and one of the shells- 

